O’Sullivan, 27, has given up exactly six earned runs in each of his last three starts, including last night’s, thus precipitating the move. He owns a 6.08 earned run mark on the year, with 4.4 K/9 against 2.5 BB/9 over 71 innings.
Of course, O’Sullivan was largely being utilized with the hope that he’d absorb some innings while providing acceptable results. Over parts of six big league seasons, he’s now pitched 302 1/3 innings with a 5.95 ERA. The Philadelphia staff has been collectively terrible, allowing a full third of a run more per regulation ballgame than the next-poorest staff.